Rotary engine



3 Sheets-Sheet 1.

(No Model.)

P .A. BOYD. ROTARY ENGINE.

Patented Mat. 15, 1898.

' 7 INVENTOH WITNESSES.

A FTORNE TN: Norms PETERS co.. mnrauma. WASNINGTON. n. c.

(No Model.) 3 Sheets'Sheet 3.

F. A. BOYD.

ROTARY ENGINE. No. 600,710. Patented Mar. 15,1898. j/

L II Nil w V I ,F IHHIII m n.

QELLQLL; mumm 1f 0 if 1 l w 6' f1 WITNESSES: 7 rLNVL-NTOH Nrrnn STATESFRANK A. BOYD, OF NEW ROCHELLE, NEl/V YORK.

ROTARY ENGIN E.

SPECIFICATION forming part of Letters Patent No. 600,710, dated March15, 1898.

Application filed March 10, 1897.

To aZZ whom it may concern.-

Be it known that I, FRANK ALPHEUS Born, of New Rochelle, in the countyof Vestchester and State of New York, have invented new and usefulImprovements in Rotary Engines,-

of the indicated character which are simple,

efficient, not liable to derangement of working parts in service, andwhich are capable of utilizing the motive agent to great advantage.

The invention consists in the special construction and combination ofparts, as is hereinafter described, and defined in the claim.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the figures.

Figure 1 is a sectional side view of the improved rotary enginesubstantially on the line 1 1 in Fig. 3. Fig. 2 is an exterior side Viewof the nozzle-supporting block and a portion of the bucket-wheel case,seen in direction of arrow w in Fig. 6. Fig. 3 is a transverse sectionalView of the engine substantially on the line 3 3 in Fig. 1. Fig. 4 is anenlarged transverse sectional View of the exhaust-nozzle for the engineand of adjacent parts essentially on the line 4 4 in Fig. 1. Fig. 5 isan enlarged transverse sectional view of the adjustable bracket-blockand other parts of the engine engaged therewith, taken, essentially, onthe line 5 5 in Fig. 1. Fig. 6 is an enlarged transverse sectional View,on the line 6 6 of Fig. 1, of the adjustable bracket-block, theinduction-nozzle therein, and other parts of the engine adjacent to saiddetails; and Fig. 7 is a transverse sectional view taken, substantially,on the line 7 7 in Fig. 1.

A suitable casing 10 is provided which is adapted for support on a base11, and said casing may be cylindrical, as shown, or of otherconstruction. On pedestal-blocks 12 or equivalent supports that areerected upon Serial No. 626,783. (No model.)

the base 11 the horizontal driving-shaft 13 is rotatably supported,either by the means shown or in any other preferred manner, which shaftprojects at each side of the casing 10, as shown in Fig. 3, and may beprovided with the pulleys 13. On the drivingshaft 13 within the casing.10 the circular bucket-wheel 14 is mounted and secured.

The wheel 14 comprises a disk that is provided with a center hub a,which is a'flixed to the shaft 13, as before indicated, and on theperiphery of the disk, that is of a predetermined breadth of faceproportioned to the capacity of the engine, a continuous series ofbuckets b is formed. The similar buckets I) each consist of atransversely-disposed flange having one face or abutment b slightlyundercut, as shown in Fig. 1, and the other wall 19 of the bucket slopedto approach the base of the next abutment Z) in sequence, thus producinga continuous series of spaced angular buckets around the circumferenceof the wheel 14 that are essentially ratchet-toothed in form. At eachside of the wheel 14 a trackring 15 is secured, preferably with boltsand nuts that hold both of the rings in position, as shown in Figs. 1and 3.

Each of the track-rings 15 has its periphery V-grooved for a purposewhich will presently be explained.

The bucket-wheel 14 is preferably located eccentically within the casing10, as shown in Fig. 1, and the latter may have openings 0 and 61,respectively, at the upper and lower sides of the peripheral wall of thesame, the use of which will be hereinafter described. In the wider spacethat intervenes the inner surface of the casing 10 and the periphery ofthe bucket-wheel a bracket-block 16 is introduced. The bracket-block 16has its. face that is nearest to the periphery of the bucketwheel 14rendered concave, representing the arc of a circle, the radial center ofwhich is in the axis of the shaft 13, and is thus adapted to have afluid or liquid tight contact with the periphery of the bucket-Wheel.

On the outer and convex side of the bracketblock 16 projecting portionsg h are formed to receive bolts 2', that pass through lugs g 71., whichlatter extend from the inner side of the casing 10, and the bolt-holesin these lugs are somewhat elongated to permit an adjustment of thebracket-block toward or from the bucket-wheel by means of the set-screw7t,

which is screwed through the casing 10.

On each side of the bracket-block 16 like segmental plates 17 aresecured by the transverse bolts 1, and a packing-joint 18 is preferablyintroduced between each side plate 17 and the adjacent side wall of thebracketblock, as shown in Figs. 1, 2, 5, and 6, to prevent leakage fromthe buckets of the wheel 14.

The concave edges of the segmental side plates 17 are beveled to adapteach plate to enter its angular or V-shaped edge within the V-shapedgroove in the track-ring 15 it is directly opposite. As represented inFigs. 1 and 5, the bolt-holes in the side plates 17 are su fficientlyenlarged to permit an adjustment of the side plates edgewise toward thegrooved edges of the track-rings 15, so as to bed their angular edgessteam or liquid tight in said grooves.

To conveniently eifect the inward movement of the side plates 17 on thebracket- .block 16 and their retention when adjusted edgewise, set-screwbolts m are provided, which have a threaded engagement with theperforated laterally-projecting ears m on the sides of the bracket-blocknear its outer face, which set-screws bear upon the outer edges of theside plates and facilitate a graduation of pressure therefor upon thegrooved peripheries of the track-rings 15.

The bracket-block 16 is recessed on the concave side to receive a facingor packing strip 16 of metal or other suitable material, which will forma durable and tight joint where it contacts with the periphery of thebucketwheel 14, and saidengagement of the facingstrip with thebucket-wheel is adjusted for pressure by the set-screw bolts 42 and nutsn thereon, as best shown in Fig. 6.

It will be seen in the figure mentioned that the ends n of the bolts n,which are in contact with the facing-strip 16, are circumferentiallygrooved, so as to have aswiveled engagement therewith, whereby the boltsare adapted to withdraw the packing-strip, as well as press it towardthe bucket-wheel, and thus enable an exact adjustment of the strip to bemanually effected.

In the bracket-block 16, preferably near the lower transverse edge'ofthe facing-strip 16", a fluid or liquid induction nozzle 19 is formed byproduction of a converged passage diagonally therein, and thisinduction-passage, that projects downwardly and inwardly,

' as shown in Fig. 1, is provided with an adwhen the pressure isrelaxed. The preferred means for effecting the adjustment of the gate 20consists of the screw-bolt 21, which passes through a packed orifice inthe bracket-block 16, so as to bear upon the gate.

The outer end of the set-bolt 21 is loosely passed through a perforationin the casing 10, but is held at a desired point of longitudinaladjustment by the jam-nuts 19, one of which is located in a slot formedin a projection from the wall of the casing, so as to bear thereonoppositely from the other jam-nut, that is seated upon the exterior ofsaid projection, as is clearly shown in Figs. 1 and '7.

In the perforation of the casing 10 a tubular conduit 22 for the fluidor liquid motive agent, such as steam or water, is inserted and inclinestoward the upper end of the diagonally-trending nozzle-passage 19, intowhich this end of the pipe is screwed or otherwise secured, said pipe orconduit in completed form being extended to a steam-generator or asource of air or water under pressure for supplying the preferred motiveagent to the engine.

At a point near the lower extremity of the bracket-block 16 anexhaust-channel r is formed, wherein the spring-gate 23 is held at theinner end thereof by a screw-bolt s. adjusting-bolt 24 is insertedthrough a looped projection t on the casing 10 and thence through anorifice in said casing, the inner end of the bolt extending through analined perforation in the bracket-block 16, so as to press upon the gate23.

The bolt 24 is provided with two jam-nuts t, that respectively engagethe inner and outer sides of the looped projection tand thus affordmeansfor graduating the pressure of the bolt upon the gate 23 as may bedesired.

The nozzle-passage 19 and channel r are of the same width and each isrectangular in cross-section, said formations in the bracketblock 16being merged together by the intervening channel it, which, as is shownin Fig. 1, gradually diminishes in depth to a point midway between thenozzle 19 and exhaustchannel r. Preferably a small tube 25 is insertedthrough a hole in the casing 10 toward the upper end-of the facing-strip18 for supplying a lubricant thereto, as shown i'n Fig. 1.

If the engine is to be used as a water-motor,water under pressure isconveyed through the supply-pipe 22 to the nozzle 19, and the force ofthe water-jet is exerted on the buckets b, that lie between theexit-orifice of the nozzle and the inlet to the exhaust passage orchannel 0.

It will be seen that the contraction of the channel M, which extendsbetween the nozzle 19 and exhaust'channel 0, serves to enforce a contactof theliquid motive agent with the abutments b on the buckets b of thewheel 14:, so that the full pressure of the water will be exerted forrotation of said wheel. The

provision of means for the graduation of the area of the nozzle 19 andexhaust-channel 1',

IIO

as hereinbefore described, enables the adj ustment of said parts to suitthe initial pressure or force exerted by the motive agent, and thusutilize said force economically and to obtain the best results per cubicfoot of liquid passed through the engine.

The opening d in the lower side of the casing 10 is to be connected witha sewer by a pipe (1 (shown broken in Figs. land 3) to carry away thewater that has passed through the engine, and in case air or steam isthe motive agent the aperture cl may be used to carry off Waterresulting from the condensation of steam, while the upper orifice 0takes away the air or exhaust-steam.

It is evident that, if desired, the apparatus which has been describedmay be duplicated for a large engine to apply the motive agent to twoportions of the bucket-Wheel simulta- 2o neously and thus increasepowerdeveloped claim as new and desire to secure by Letters Patent- In arotary engine, the combination with a casing, a bucketawheel therein, atransverse driving-shaft on which the bucket-Wheel is secured, andtrack-rings secured on sides of the bucket-wheel near its periphery,said rings having'V-grooves in their outer edges, of an adjustableconcave-faced bracket-block supported from the casing, adjustable sideplates on the bracket-block, an inductionpassage,and an exhaust-passagebeing formed in the bracket-block and having communication with thebuckets of the wheel, and an adjustable gate in the saidinduction-passage, and in the exhaust-passage, as specified.

FRANK A. BOYD.

Witnesses:

FRANCIS H. DAVIS, JOHN G. DEVEAU.

